That's what I did. I forgot to mention that I'm using 10.4.8 JaS and a 8.8.1 kernel.

ops:
Kernel Kev:
1. No it would not, since you would only use 1 OS at a time. As for any swap partitions (or extra hd space that would speed up your computer), you wouldn't have any problem unless your partitions are like 5 GB each. Listing a lot of OS's wouldn't be a problem either, since it's only a text file that it loads. Oh by the way, you can only quad boot because a single hard drive can only have 4 primary partitions (primary partitions allow you to boot from it) to install OS's. Linux swap partitions need to be primary too so you they also count towards the 4 OS limit.
2. I'm not sure if you can do it with Windows but Linux and Mac have ways to view partitions for other OS's.
