(Even though they're black instead of white.)Starting is easier (duh) and while it won't start from cold without using one, I only need the lever up for 50 metres or so. Cold idle is almost achievable at my first junction (with gentle blipping) at around 1,200 rpm and five minutes later when warm, up around to 1,400prm.
Of course, my tacho needle needle isn't still at these measurements but "indicative".
The best small change I've spent on my bike in ages.