I've had the Suburban Machinery kit on my '07 for 4.5 years. It integrates very well indeed and simply appears to be part of the bike - most variable pegs look a bit like an afterthought to my eye.
I'm no hoon (Hi, Joe) so I have never come close to touching a peg or my boot - my "chicken strips" on Meteler Z6 tyres are about 1cm (0.4"), I I do go "over" but not rght to the edge!
To demonstrate the wide application, I'm 5'8" with a 28" inseam and Euro size 42 boots. I've mostly used a 780mm low seat, and also now have a 800mm seat (low comfort seat) as well.
The knee relief offered by -40mm is great, and combined with the +20mm of the comfort seat is a much more comfortable distance ride (I'm set up to tour). With 25mm bar-backs (MV Verholen) my ride position is clsoe to perfect for me and my riding style.
#584 Crystal Grey tour-farkelled Vespa GTS250 PX150
xF650CS R1150RS R80 K1100LT R65LS K100RT