Pros
Large infrastructure means a lot of job postings within the company. Lots of branches provide flexibility with life changes, etc. Training stretches over 3 months so you can't say they don't try. If you're in your early 20s and don't have a real path yet, a Personal Banker position offers a safe salary and a great opportunity to learn about sales and finance. A little bit of customer service/sales experience should be enough to get you an interview, at least, and you could a whole lot worse south of 30.
Cons
Business approach is still rooted in outdated marketing techniques and antiquated sales goal priorities. Bottom line is all about quantity over quality. They say they want you to build relationships with your current customers, but they base payouts almost solely on new low-end business that you basically have to get by pestering shoppers at a grocery store. I realize this is mostly rooted in my own sales/business philosophy countering with theirs so I won't go on (though I could) and I'll give them a 3 (though I'd prefer 2.5). It's a safe salary and they seem committed to making it work with new hires though, so it certainly could be worse if you're looking for a start. I am hoping in time to work out the kinks, but again when the sales strategies so central to the job are so skewed toward telemarketing and shoulder tapping, it's tough to see a long future together.