I read this ability wrong originally. You can only use the ability on the discarded asset. This means you can stock a sledgehammer to toss for a free use of the double arrow attack (as clarified in the FAQ), but you cannot put it on a hammer to get a free use of the double attack after you whack them with the base hit.

This is a bit strange and basically means ad hoc allows you to use tools with big activation costs from your hand for free, after using an attached weapon.

Q: Can we attach a card to Hunting Jacket when the max is already reached, discarding another attached card and gaining 3 resources? A: You can’t. Once three are attached, you can’t add more, so you can’t get the resources. No cycling due to the limit. It’s just a convenient way to stash cards. And particularly good for a forthcoming investigator.

Now, onto the review:

This card is one of my favourites of this new expansion:

• It is a fantastic enabler of Dark Horse builds by giving your resources during your turn during a window.
  • Costing 2 is also really good for Dark Horse decks, with 1 resource coming Madame Labranche and the other from the Upkeep phase.
• It is a great way to use cards that you have 2 copies of but don't intend to play, like 2 Peter Sylvestre, or even Dark Horse itself, which is limited to 1 per investigator, and turn them into resources.
• 2/2 Soak on your body slot, at 2 cost, is already an excellent upgrade to the Leather Coat on its own, even for 2xp.

Special cards worth considering:

• Dilemmas are limited to 2 per turn, so if you draw 3, one of them will turn into a dead draw. Fix this by attaching it to your Hunting Jacket.
• End of the Road is designed to be a dead draw until the last scenario. Stash it to your Jacket for some resources and wait till it actually matters.
• Pelt Shipment, of course, doesn't restrict your hand while it's on your jacket, and you can sacrifice it at the end of the scenario to benefit it without dealing with the negative aspect.
• Devil will reward you with even another card for bombing your jacket.
• Tommy Muldoon, of course, who nets 8 resources out of this beauty!

Altogether a really good card, good but balanced, and I am excited to play with it.

One last thing, though. You didn't think I would forget this line:

And particularly good for a forthcoming investigator.

So what will it be??? Is it for the next box or the missing parallel of this cycle?
Will it react with cards attached, like Backpack, Katja Eastbank... Defeating assets is already covered by the Rookie... Can it be a Dark Horse specialist who reacts when you gain resources during your turn?

In case anyone was wondering about whether the words "only... under their control" in Bob Jenkins' ability stops you from utilising Shrewd Dealings' activated ability during Bob's additional action, it doesn't... the rules team answered my email query with: "Shrewd Dealings is intended to synergize with Bob Jenkins’ investigator ability—meaning, when Bob uses his additional action to play an Item asset from an investigator’s hand, he can play that Item under the control of any investigator at that location."

Pay 1 resource and 2 actions to get an illicit card out into play (guaranteed) and use it.

It's a pretty good tutoring card if you're trying to find an ilicit weapon, or lockpicks/thieves tools.

Could definitely help in any rogue deck mailing those.

I'm pretty sure that Wilson can use his Ad Hoc (by active another tool) to discard Ptichfork from his hand and fight. And when he succeed, Pitchfork will attach to location form discard pile, then you can and control it without paying its 3 cost. If thats not enough, ask your best buddy Bob to give you a Survival Technique to make Pitchfork rotatable.