I assume you mean about the one-wheel-lift? Quaife (and Torsen, etc) are geared LSDs, as opposed to e.g. OS Giken or Carbonetic (etc) that make clutched LSDs for our cars. On the clutch ones there's more regular maintenance and parts wear to worry about. The geared type are relatively maintenance-free.
The tradeoff with the geared type is that it stops working correctly (reverts to open-diff behavior) if you completely lose traction on one wheel by putting it in the air. It needs at least a little traction on both wheels to do its job properly. When that one wheel goes completely traction-free, it spins and no power is delivered to the one on the ground. It's not that hard to put a rear wheel in the air mid-corner on a track. You can do it on flat pavement with some cars+drivers+corners, and you can definitely do it to the inside wheel while skipping over some kerbing on the inside.
The question that's unresolved, to me, is how disruptive this is when driving. If it's a minor annoyance maybe it's worth it. If the sudden traction change tries to spin you off-track with a violent and unexpected transition in the rear every time it happens, I'll take the high-maintenance option
