Probably. As you know, it is possible to get the same or at least very similat look with different things actually going on to produce that look, so I can't be sure, but I'd say chances are good AF plays a pronated grip. Dennis Orcollo's grip posted above is so extreme it's obvious but Alison can get that appearance in other ways too.
In general, it is very common for snooker coaches to mention the 'pronated' grip, obv Barry Stark the most notable one included. I think in some cases it is a misnomer and they are just using the word pronated interchangeably with 'thumb-down'. But as I mentioned in a previous post, while all pronated grips are thumb down (with a standard diameter butt anyway) not all thumb down grips are necessarily pr