When mine activates and I go to pull out it hestitates just a bit. If you blip the throttle before you pull out, it re-ignites the cylinder and off you go without a hesitation. If you are bothered by the tall first gear on Cruise Drive 6 speeds and don't have a lot of parade duty or long lights I'd skip it. In my case, I have some long lights on my commute and I'm pretty good with a motorcycle clutch so it doesn't bother me. If you do decide you want it, I wouldn't make a special trip. Have them do it while it's for a regular service or the 905 "product improvement campaign".
And you are correct, on early manufactured '08 and earlier bikes, the heat management is only able to be activated or removed by the dealer. The rolling the throttle back for three seconds will not work.
Ride Safe,
J-Carr