Hey SLPguy, congratulations on getting into Western and joining your girlfriend. I, too, have XY chromosomes (lol), and we have a buddy at Western (he's told me about you, although I don't know your name). That must be exciting. I'm still considering McGill, Western, and Toronto (and I've visited Montreal and London in the last two weeks to check out the schools; I'm serious about this!), so I've been racking my brain, but I wanted to point out a few things about your UWO vs. U of T comparison.
At U of T, I'm told that students rank their choice of within-catchment placements from 1 to 10 (so it's a weighted lottery in a sense) but they could get something that's not in the ten they chose! If you want something outside of the catchment area, the program will try to match you as soon as possible, skipping the lottery. U of T's catchment area is Burlington-Orangeville-Barrie-Beaverton-Oshawa.
UWO's awesome feature is the in-house clinic where a student can do a good chunk of their internship hours in a setting that will help the clinical student, but there is value in U of T and McGill giving external placements in that career networking can be done and students can check out places where they might actually work; the downside to external placements is that experiences among students can vary wildly, although at Western, the students will have to leave the in-house clinic anyway.
Although SLPs work everywhere in the country, one has to be aware of the geographical limits of placements and the territory that each school claims. As a student at Western, you can't do placements in Toronto (because of U of T), Ottawa (because of uOttawa), Vancouver (because of UBC), Montreal (because of McGill and UdeM), etc.; as a student at U of T, you can't do placements in London (because of Western), etc. I don't know U of T's catchment area is equivalent to its exclusivity zone, but I was talking to Western and I was told that the 416 area code and any of U of T's affiliated hospitals are no-gos for Western students.
I've been told by people (including a prof at U of T) that yes, the scale from research/theoretical focus to clinical focus goes like this: McGill, Toronto, Western. However, U of T has more than two professors that were previously clinicians: five of their profs with PhD's are registered with CASLPO, of those four have clinical degrees in SLP in North America (the other one has a clinical degree in "orthopedagogics" in Europe), and of those three practised as SLP clinicians in North America for a period of time. That being said, both schools also rely on part-time lecturers who are still practising clinicians and they teach certain classes.
I'm going to spend the next two days to think about what to say to McGill! I'm so unsure!