First of all, don't ever let anyone tell you that something won't work or that you can't do it. I have proven many people wrong before. Film makers have tried to attach the LA7200 to both regular SLR lenses and HD camcorders with success. The XHA1, for example, has a 72mm thread so the LA7200 will mount right on it. If you get a stepping ring that goes from say 58mm to 72mm then you can also mount it to a regular SLR lens and use it with the Letus.
You will, of course, need to adjust how you shoot. The focusing at any zoom range may differ and the sweet spot may change...but, where there's a will, there's a way.
These guys did it:
http://vimeo.com/3470924
http://www.dvxuser.com/V6/showthread.php?p=1638289
Also, there are three advantages to using an anamorphic lens with a camera that already has the 16:9 ratio. 1) If you can zoom in enough to achieve it, you can see oval bokeh instead of circular. 2) You get a nice cine-ratio instead of the regular 16:9. 3) Bitchin' lens flares!!!
let me know if you try it!
-Tracey