As a fan of donegal in more conservative colours (I have tan donegal 3 peice and a blue one waiting to made up), I can appreciate the traditional fabric with some more fashion forward colours. I suspect that the purple, red and orange shades would push a wearer into dandy territory (not that there's anything wrong with that).
I did - starting wearing braces when i lost about the same amount of weight and suits started to fall. All my 3 piece suits now have on suspender buttons and no belt loops. I have my 2 piece suits with belt loops to keep the option.