To be quite honest, I only read the first two pages of this thread, but I wanted to put in my two cents.
I have a remote starter in my 94 YJ, it has been there for three years. I have a 5 speed. I was a installer for years so I am able to do all the work myself.
They accually make a install kit for manual's, a bit pricey but they are out there. The car will not start unless it is in nuetral.
In all the time I have had my starter, I always watch to see it start just to be sure. If I am unsure, I don't start it. I have started it while in gear once or twice, but always stoped right away. I love my starter It is the best thing. I even put one in my $200 88 dodge omni a couple months ago.
If you don't live in a place where it is neg 10 degrees every morning, you won't understand the benefit of a R/S but there are plenty. I have a small momentary button located under my dash that, If the car is running, I hit the switch and take the keys out, the car stays running, I can safely leave my car running in a parking lot, while staying warm, and not worry about someone taking off with it. (if I am only gonna be a couple of minutes) On nights where it is going to be neg 30 degrees out, to keep my coolant from freezing, I can program the starter to start once an hour for 10 minutes for the entire night so the engine temp never gets too low. There are other but I think I have typed too much!