DIY Inverness cape

[EagleJCS]

As a piper who has worn an Inverness rain cape (not the 'Bandspec', but a previous iteration with large buttons), I would suggest going with the Inverness cape rather than a Coachman's Cape. Anything restricting arm movement for clean strike-ins and cut-offs could be detrimental to your performance, especially if you're in a competition.

If you do decide for the Coachman's, you may want to consider having your 'bag arm' sleeve adjusted (widen the seam of the arm and open up the gusset in the armpit to allow freer movement). I've known a couple of pipers that have done something like that with their Argyll jackets.

I've heard tell there may be some jackets marketed with just that sort of alteration pre-made. I've not been in the market to look for one and haven't seen any 'in the wild'.