A few mates have done yes, but not me.
They’ve gone down the custom ti route and about 50/50 disc/rim, a couple have raw finish and a couple with painted carbon forks. All ride at a reasonable club run pace with the fast lads and all have said the same thing about comfort and durability, mix of chain sets and wheels with most spending a hefty chunk on lightweights and di2 or etap. All have carbon seatposts, comfortable saddles (something fitting with decent padding, not the pure carbon blades) all have ti stems but a mix of carbon/ti bars too..
Seven seem to be the most popular..
I’ve not ridden one so can’t comment on what they’re like.