Allan's runs through and out of congestion are his most eye-catching aspect but I feel like he just puts the boot to ball before even half considering what / where / how and wastes the advantage he has created for himself by bombing blindly; he plays like a backman who is just trying to clear the ball at all costs. He tackles well though and has a good technique and also has a good "don't argue" which is useful in congestion; he is not crazy fast but when he has momentum he will be a hard player to stop.
I can see him being a skinny side wingman longer term if he can build up his endurance. I think the club that is drafting him will be going for that, rather than a HBF (you need to be more useful to the counterattack by foot for that) or an onballer (doesn't get enough of it regularly enough for that role). I think he could also be a good half forward flank, although he has not played there much. Basically to begin with you can see him being useful in a few roles without being a star at any one of them.
Of the West Aussies, I prefer Hamish Davis over Allan; for mine Davis has better decision making and agility even though he has the dodgier looking kicking mechanics and is probably not as fast as Allan.
