Hi Michael ...

And if one has Rhino 4 there is a $95 plug-in for that. But a MoI file has to be sent to Rhino 4 and 'saved' for it to work properly.
It does make sending 3d MoI files pretty fluid and accurate that way ... layers can be turned on and off at will to indicate construction details.

Simlab is a good alternate, too, and I gather that the Sketchup one works though I have not tried it.

I recently had a client download the non expiry version of MoI and sent him the MoI 3dm ... worked like a charm with the advantage of hidden lines on or off.

Maybe by version 5 or so ??

cheers,
eric