Doug,
What BobG said, and also, with the ILF you get the stability of the deflexed riser (like with the Cheyenne), the ability to use Morrison longbow and recurve limbs as well as ILF limbs made by many other manufacturers, and the ability to tune the bow for weight and tiller. Lastly, if the limbs are not tightened all the way down, the limbs can be removed by hand in seconds, thus making transporting the bow extremely easy. The bow shoots a little better in my hands than my Shawnees and Cheyennes and I really like the fact that I can have a 56" bow using the Mini 14 riser that shoots as well as my 60 inch (or longer) Cheyennes and Shawnees. My draw length is 29 1/2", so even longer than BobG's. I don't recommend a longer draw for the 56" bow. Better to go to 58".
Bob Morrison says the longbow limbs are a little faster on the Shawnee, and some people prefer the straighter Shawnee riser, so MRD is very reasonable in saying that he prefers the Shawnee over the ILF. All the Morrisons are incredible, so you can't go wrong.
Allan