Still looking for an answer on this from you guys....

NO ... Im not being very impatient ... much ... this is mainly an 'update'.

Ive done some testing and I was correct in my initial post.
Ent_morph DOES bulldoze over an ent_clone.

So if you perform the following, you will get an out-of-memory crash VERY quick.
Process "ent_create; do{ ent_morph; ent_clone; wait; }"