That's a good looking strap. I agree it would've been nicer had it been less 'raised' in the middle.I've seen those lever/quick change springbars you mention; too bad they're not more commonly used. OFREI sells the Bergeon 30227 Pliers to punch a little hole in any strap to allow the use of quick change springbars, but it ain't cheap.Persistence is key.
I like the H-R strap I got for my Hamilton. Wish they'd have more options available in a Short length. I also like Rios straps.I suspect H-R and Rios might be considered by many TWATers to be too pedestrian.