I'm just a future PT student, but I also have some very brillant friends who work in finance. I'll share with you some of the things they have taught me.
Choosing a job just for a repayment plan is not a wise choice. It's also not smart to depend on programs such as federal loan forgiveness programs.
If you were to significantly cut your lifestyle after you graduate, you could actually pay down the vast majority of your debt within 3 years and all of it within 5.
If you have a loan of ~$100,000 and you put at least $20,000 of your net towards it a year, you can easily pay it down in half the time loan forgiveness programs pay it off.
This shows you how the measly $20,000 that IHS gives you isn't anything special. You can pay off your own loans AND have a higher paying job if you go a different route. I don't know what their base salary is though. If you're payed significantly less than other PTs, then it's not worth it. If it's comparable, then you actually get a decent deal
Just something to think about.