If you are going to use track pads, I recommend endurance pads like the Pagid yellows or PFC 06 (or 08). Shouldn't be any problems swapping back and forth though each pad will have to put down a transfer layer so ultimate braking performance will be delayed until that is done. I use PFC pads for street and track (z-rated on street, 06's on track). That way I don't have the transfer layer issue nearly as bad when swapping back and forth. Stock pads are crap after a few hard stops, so you really should put in the track pads for HPDEs.
'11 E90 M3, Mebourne/Black/Fox Red/Black, 6MT, roof, PP2, heated seats, moonroof, split folding rear seats, iPod/USB adapter -- 8/8/11 euro delivery! Technic harness, JL XD 6/600.