Is this Snorlax worth powering up?
Answers
It's good enough, but you only have the candy to power it up once.
I have the same Snorlax at 1409 CP (1900 to power up) for a couple months now and I've wanted to power it up but I only have 9 candies. I've realized it would be wasteful to even use those, since by the time I get enough candies to power it up to fighting strength I'll have probably caught a better one.
Nonetheless, he has a great moveset and IVs. Great find to fight with!
I would make it your buddy, collect candies, and power it up. For one thing, I think body slam is an underappreciated defensive move. For another, Snorlax is rare enough that you might not see another one for a while. Most importantly though, I would argue that a pokemon's name and CP matter more than moves on defense (especially with this new patch): just the presence of a high level Snorlax in a gym will deter some attackers, and having a high CP means that even if an attacker knocks off a couple of lower-positioned defenders, your Snorlax will probably be safe from being kicked out (unless, of course, the attacker is persistent enough to conquer the entire gym).
It's definitely worth powering up. Body slam is the only power move from Snorlax I fail to dodge sometimes. Sure it's an less than an ideal moveset, but he's already gym relevant. It really sucks you haven't caught a lesser one to walk around with, That's your buddy...15/20km to level is a grind, but that guy worth it.