They are quality tuners, but so are the Grover Rotomatics - they always stayed in tune. I just like the traditional look of the open-backed tuners. That said, Rotomatics have been around long enough to be traditional, as well.
I won't say it sounds or feels different, I just like Waverlys. The Grovers weigh exactly twice as much (280 grams vs. 140). Problem-free installation - lots of good advice and videos out there, especially on fitting the conversion bushings.
There is one called GIBSON MONTANA STAGE DELUXE LIMITED EDITION, which is 12-fret with a wider neck and a rectangular bridge (not belly). Don't know the rules about posting dealer links, but it is easy to find,