Don't know about the airlines they've joined but if you look at their website it says were the students have joined.
A quick trawl through the lists shows that of 50 completed IR's over the last 3 years, 9 have airline jobs. Of this 9, 2 are obviously through contacts, looking at the airlines they have joined, and 3 have obviously paid for TR's (Ryan). This leaves a possible 4 out of 50 who have secured a job in the last 3 years without forking out for a TR.
I'm not Bonus bashing, as they are probably no worse/better than any other place. Just pointing out the facts that CPL/IR + low hours does not have good prospects for airline job immediately out of training.