I signed up for NFS just to comment here. Obviously nobody here understands what your question actually is, since you already have the 3axis stabilisation and your question for coupling that system with IS lenses is a hard one to grasp i guess. Anyway, i've been thinking about the same thing. Its true what Beau says, that other Cine lenses have no IS but they might have some more room in post to stabilise their shots. I've been working like crazy to get my gimbal perfect (dys eagle eye alexmos32b) with my bmpcc and L wide lens, but i'll test a IS lens tomorrow. If you're interested in the results, hit me up in a couple of days.