Oh, it's a custom Bilenky; it just wasn't built custom for me. The original owner sold it when he realized that with new improved family responsibilities, he didn't have the time to ride he had planned on. So I found it on Craigslist. After double-checking to make sure it hadn't been stolen (always an issue on Craigslist), I got a lovely new-to-me bike that just flies compared to my daily commuter Cannondale Adventure 400.

This is what it looked like when I brought it back "home" to Bilenky to get checked out:

I've since given the drop bars, the brifters, the narrow saddle, and the carbon seatpost to my husband for his bike; I've got a Brooks saddle and riser bars with bar ends on it now.

You're right -- if the time comes that I want to put couplers on it, I'm in a great position to do so. But some folks who made the investment in couplers have already gotten burned when the airlines changed the definition of "overweight" from 70lbs to 50lbs. I'm half-expecting them to back away from 62 linear inches as "oversized" soon. So I think I'll track down a used case, try it -- and if I don't like it, I can invest in the conversion to couplers next year.