rWt - welcome aboard!

Enjoy.
NOT fired the Seecamp?? Shame on ya!

I think yes - ''pocket'' is the real factor in the decision process. Mind you - I might be something of an exception tho because I have a belt slide rig for mine too ..... and in my case that is because when feasable it allows me to carry with prospect of a much quicker access. Then the gun's appeal is simply ''small is beautiful'' ... with regard to ease of concealment. So small and flat - very hard to have much problem printing.
Of course, where circumstances (clothing mainly) permit - I carry bigger for sure. The R9 is not a first choice gun for most part unless it is ''all that is left'' due to constraints. Overall I'd prefer to think of it as an excellent BUG..... for which pocket is pretty much default way to go.
Re the .40 cal ...... hmmm ... I rather doubt it right now. For the foreseable future, they will be only able to beaver away at the R9 output - trying their best to meet demand. No time now for any more large scale R&D I'd think.
The R9 is such an ideal niche gun, I'm not even sure if a progression to a larger cal is even warrented - and size would have to be increased anyways - by default, even if marginal.