Yes, especially if u get them both submissive or dominate. Hopefully there will be a add on for if u get them 1 sub and 1 dom. (Going by memory here). Although I haven't gotten a second wererat to try that.
If memory serves well, I think the game only allows you to have one wererat...
if you have one sub one dom, the werewolves will be pleasuring themselves without you when you enter the prison