I notice on your Web site that Freedom Kilts may be considering marketing "a Waistcoat/Vest, and a Contemporary Kilt Sport Coat." Hopefully it'll look something like this, perhaps in a nice charcoal wool.

or this or this

Note no epaulets or fancy cuffs or pockets (I prefer the slash pockets shown in the center shot) and with a more modern cut, particularly the shorter lapels and the front of the jacket. The jackets shown have three buttons on the front of the coat and one on the sleeves. Ideally, considering the style and the cut, the off-the-peg jacket and vest could be tailored for your customers who wear a fitted or even slim fit dress shirt - e.g. not the usual "relaxed" or "full" fit - something that would fit someone built like you, Steve.

The vest shown on the far left is a little better than that worn by the young man with the black hose because of the splay at the bottom to make better room for a sporran. Five imitation stag horn buttons and two watch pockets and a satin back with an adjustment strap, of course.

Considering the number of kilties that resort to making their own from store bought jackets, one would think there's a market for this. Also, some of us just can't get worked up about yet another cookie-cutter Prince Charlie (or Argyll or Lomond or Holyrood or Craill or Sherrifmuir Doublet or Montrose Doublet or whatever) - I mean, I'd get to use one of the fancier cut jackets about once a decade. The jackets shown above are as versatile for kilting as a standard blue blazer is for bifurcated garment use.

Finally, the opportunity to order an expensive garment from a merchant I know and trust is also a big selling point for me. I've been burned by an overseas merchant. I won't make that mistake twice.

Anyway, I hope this helps with the market research.