no. at 9-10inches, your fish are a couple of months old at best (assuming there's not been any stunting), and are not sexually mature. Gar get sexually mature at a couple of years old, i'm not too sure with floridas, but female gators mature at 10-12 years of age, and female trops at 3-5 years of age (since we're on the topic, solomon was mentioning that cubans can be expected to be somewhere inbetween). i'd expect floridas to be somewhat similiar to t-gars.
gars will often rub against each other, it is a social or dominance display. in most cases (especially in aquariums), it's nothing more than that. gars can vary greatly in pattern and i wouldn't read too much into the fact that one has more spots than the other.
finally, there are a few misconceptions you seem to have abot gar that are pretty basic. do read through the stickies (especially the Official Garticles) and do some reading through the forum, it will benefit you loads.
cheers & welcome to gar territory,
xander