I've never attempted a riser only landing so I wasn't sure it had enough flaring power to bring me down safely. I've played with it rather high up, but since there is no vertical reference, I can't tell how much of the vertical descent is changing.
The other thought that crossed my mind is, is there a point where the wing loading on your canopy changes the glide ratio to the point where a riser landing is not safe?
Oh, and thanks for all the information!