This may not be what your looking for;
but I've used Alice and several other external frame packs. later I tried a few I frame systems.
I haven't camped a lot in the last 10 years but have gone camping and hiking from BSA, US Army, Personal - fun, I hiked the ATC in pieces I was a trail maintainer on Sandy Hook and Pine Knob in Maryland for years.
in the frame packs I like the Alice rig- I have the little load carrying plate for it too. it is versatile and comfortable. I don't like the way I Frames don't let my back breathe. it is pretty quick and easy to drop your pack, remove the frame and start carrying the scepter cans or other heavy items. you can adjust the straps and re-settle the load as needed. I took a couple of the black cottonwebbing belts - used for the BDU pants and wrapped them around the load plate for storage and used them to secure a load when I used the load plate. I have two old moose packs and frames - Alice large - I've never worn them out. repaired them but never had them fail on me.
I like the system better than I frames for anything except climbing - steep enough I need to use three point holds in places.
I've never tried the "Alice Style". I do recommend getting a couple of waist bands if you are planning on heavy use - I wear them out the most.