Yes. It's worth it, IMO. Yes there is a separate crew line, but GE really speeds things along. Processing takes seconds, not minutes. You can't use a crew line when not in uniform, so if you ever travel internationally for leisure, it will even more pay off in spades. Even a couple times saved standing in a half hour plus line is worth the price of admission to me.

Also, there's a program called NEXUS that's a GE type program that works for both US and Canada entry. It's only $50 for 5 years of enrollment. It gives you the exact same benefits of GE, but also expedited entry into Canada. This is the program I've signed up for, and works great for our flights into Canada. It goes require an interview at specific locations that have both US and Canadian customs officers staffed. I did my interview in BUF by Niagara Falls. Makes a great day trip on an overnight (see the falls, etc.), it's cheaper, and you get access to Canadian border crossings included with all the benefits of GE (expedited handling at US border crossings, precheck, etc.) I'd look into that...