I've noticed his wares on the AA; had entertained the idea of getting one of his gambesons. I like Forge of Svan but as Ian had pointed out to me, they're nowhere near historical in construction (but they're very easy on the pockets and good for the field, just not LH) - the gambesons they've got pictured on JK's site look much more in line with what I'm wanting.
I know others who have gotten the armor bits and none have complained so far as I know.