OK, I really, really like this cock. FIrst off, the thing works even with m4 textures as long as you use the geoshell and a fantasy texture but it blends together fine. It would be great to have an m4 UV, but hey, I can live.
As someone who works mostly in 3dl, I have to say that adjusting it is pretty easy. I use the cock bump maps as specular and ensure that the ds shader is set to skin, and the cock looks pretty good.
It took a while for me to figure it out, but you can also make the sheath look like an uncut cock, and if you scale the cock down, you can have the gland peaking out--I am referring here to making the cock look flaccid. I do wish the sheath had a morph to make it look more like a normal cock when closed flaccid (ya know, so the guy will look normal and then bam this magna beast cock comes out), but this is pretty amazing as is.
I agree about having more morphs for the glans, especially scaling, but it has SOOO many morphs, and some come out oddly beautiful.
Did I hear talk of a k9? will pick up the equine next, but a k9 would be awesome.
Really great product, with great pdf instructions and very user friendly.