I have perforated seats on my Vette. I've used Zaino leather cleaner (Z-9) and conditioner (Z-10) for 6 years. Good stuff. No problems.
Zaino products are what many/most of the hard core on corvetteforum.com use.
I just emailed Sal Zaino and double checked and he said no problems with perforated seats. Small company and Sal will answer just about any question you have about paint, exteriors, interiors, etc. Good guy and good resource.
If you like the smell of new leather you will love the Z-10 leather conditioner. Smells just like it. When I put the conditioner on I don't use a pad, I just slather it on and rub it in with my hand. Car smells like new for weeks.
All of their car care stuff is great.
http://www.zainostore.com/Merchant2/merchant.mvc?Screen=CTGY&Category_Code=Zaino
(read the reviews on their stuff)