Consider it, it's very easy to set up (I had the wolverine delivered but the whole system to do everything the sorby will is HUGE! Best suited for 8 inch grinders!)
I manage to sharpen irish grinds quite easily using the sorby and it takes about 10-20 seconds to switch if you have 1 wheel like me (wet and dry grinder) for scrapers and skews to gouges.
Advantage with the sorby if that when you screw it down to your nice new white wheel, it's screwed in using 4 slots. When you dress your wheel and it's smaller and smaller, you can keep the angles the same by sliding the sorby along a couple of mm, very simple!
I'd get a wolverine if I had a a 2 wheel 8 inch grinder setup, but with mine, new white wheels are only £11, which is a bargain!