Dynamat / Peal n Seal... yes or no

Did some research on past threads in regards to Dynamat and I was going to put it down until I saw the price and decided to buy the Peal n Seal from Lowes (due to Member suggestions)... but prior to install, I had a few people tell me not to use it.
They said if any water/moisture gets under it: youre screwed... also that if you ever need to take it up... its a nasty job, and lastly in a hot climate like FLA... it could melt and cause a smell.
I got some samples of B-Quiet from a buddy and they look very similar to Peal n Seal. The B-Quiet Extreme sample says it consists of rubberized asphalt.

Being that I live in FL (heat) and have a convertible that has occ leak issues... its made me reluctant. I purchased the sound deadner kit and was gonna install that instead due to the fact that it doesnt adhere to the floor. Figured that along with the mass backing on the carpet should help with the heat/noise levels.

Any updated feedback/opinions? I still have some time to install it.
... see my Carpet problem Mass Backing issue thread.

Thanks