We have yet to move to Windows 7, but plan to do so shortly. We are currently on LANDesk 8.8 SP3 and will either move shortly to LANDesk 9.0, or wait for 8.8 SP4 (whichever - butwe will need to do either shortly as we plan to start migrating to Windows 7 next month.
A security analyst onsite voice concerns regarding application of security patches on Widows 7 devices with BitLocker enabled. According to him Micorsoft suggests that BitLocker be disabled (comment below):
"Suspend BitLocker before making any major computer configuration changes (such as changing locales, installing a language pack, installing security updates, or updating the BIOS), and then resume BitLocker protection after the changes are complete."
Sorry, I can't answer your question directly, but wanted to mention that LANDesk has partnered with the vendor Credant which may be more compatible with LANDesk and other systems management systems. They (Credent) presented at a LANDesk user group meeting I attended a couple weeks ago and it looked impressive to me. If we weren't already knee deep in PGP FDE I would be looking harder at it. Might be worth considering.