Well, i think full disclosure makes it a fair game. And, in the end, we don't want to work against them, we'd just like to do, well, whatever we feel like doing, on this really sweet piece of hardware. (and without paying 75€ for every mistake - even if this makes it way more exciting)
But, on the other hand, if iRex doesn't play by the GPL rules, i don't see a reason why we should.
What do you think about offering the non-disclosure against a reflash tool? Or a description how the engineers do it? Or just the information how you can boot it over ethernet?
Hacking iDS isn't really something we should be interested in.