Heh, when I first saw that pic of Al with Ed's coat (on the japanese FMA site, actually) I thought it *was* Ed.. but drawn differently, perhaps to reflect having grown up and matured a bit. The two definitely look different, especially after having seen future-Ed and future-Al side by side to compare, and neither look that much like Hohenheim from the features, but the hair's the same. They look a lot more like each other, than either resembles their father, if that makes sense. (:
Still need to check where Ed left that coat tho... I believe that it's in Resembool ^^ (remember how he was always in black near the last few episodes? It should be in Resembool cuz he dyed his hair black there to disguise himself and Al... I don't really remember if he actually even left it in Central, before he went to Lior... gotta look for that after my finals)
Yeah, do check up on that if you have time.. I was wondering that myself, but I'm too lazy to sift through all the eps again, plus I've got school work as well. (: I think you're right about him having left it in Resembool (is that the correct spelling? It's different everywhere, so I never know what to write..), unless he took it along in a suitcase or something. But I don't recall him having taken the suitcase at that point.
I'm still really hoping Al loses (uh, ditches, not misplaces) the coat soon, though. It's unique to Ed! I'll just console myself by assuming that when Ed returns he'll take it back. ŽD