Have. A few are great, but with limited inventories. And knowledge of many of the other, or older, platforms out there seems a tad limited at these shops. While a couple could do a build, they're mostly road bikes. Have tried on most of the current crop for size. The Trek DS is about closest, more or less, as discussed above, though my preference is for shorter/mixte and greater TT/length. A "stretch" DS MIXTE might be just the ticket.