I'm in materials, but maybe I can provide a little info.... I have a lot of friends in eng phys!
And I know a bit about Carleton, its nice but from what I hear its mosly Aerospace.
I know some graduates of Eng Phys from here, and theyre working with really cool stuff - tv broadcasting, nuclear plants....
You learn a lot here at mac! If youre interested what the courses specifically teach you you should check out the course calendar on mcmasters website, see what courses you have to take in eng phys - theres a mini description of each on the site
Best of luck, and hope you have you in Mac Eng!