May just be me, but I have a mental block on getting a bespoke suit made out of cotton. Seems like an expensive process for a (subjectively) cheap fabric. I think a high twist fresco or linen would be a better use of funds/time. And either add more character, IMO. I think it stems from an interview I once saw with Harry Winston (?) where he said he had a hard time justifying recommending bespoke cotton suits to any client (in this case I believe it was seersucker), since materials are so much cheaper.
Perhaps once I cover all my essential bases I'll be tempted to look at cotton and I obviously realize it becomes cheaper with CMT, but still, something keeps me from seeing it as a good idea. YMMV.