I've got a Rivco center stand on a SEEG, which sits lower than the current SESG's, and I've never come close to touching the stand during cornering (but my footboard supports are ground down pretty well). The only place it could possibly touch is at the mounting plate under the frame, like when traveling over a speed bump, because the bolt heads do extend down beyond the lowest portion of the frame. I figured when I first looked at installing it many years back that I'd have to lay the bike down to actually cause the feet or the operating arm to touch. The stands with larger and more extended operating levers may be different.
A good center stand is worth it's weight in gold, and they should be standard equipment IMHO. Plenty of other bikes that cost one heck of a lot less than a Harley do have them as standard equipment. And some, like BMW, are actually electro-hydraulic and operate with a button, no huffing and puffing required.
Jerry