Wife's DSG is great (fast changes, not sluggish) except when need 'fast' acceleration from low/zero speed when zilch happens for 3 secs. Maybe turbo (diesel) lag but no-one knows for sure. When it does come in (you've got throttle wide open by then) it's 'wallop'!
Dealer no use for SMG demo unless lucky (I've found a couple of specialists) but you really need a friend or contact to show you. Even driving it yourself will take a long time, tho 'it's worth it' (I'm still learning). If you are interested and I'm ever your way, would be pleased to do so (or will you be at Thorney's in April?).