Question About Taking a Shot

[Stork]

So I play the party 3/6 6-max and my roll is currently alittle above 2000, I was thinkin, how bad of an idea would it be to take 20BB and sit down at a 5/10 6-max table? If I lose it I would go back to 3/6 of course and still have 300BB's for the level. How much harder is 5/10 than 3/6? I don't find 3/6 particularly hard, except for the occasional tricky player who knows when to bluff-raise the turn.

I got the idea after reading Greenstein's book and he talks about how if you have enough for 1 buy in, don't be afraid to sit in on a game above your roll when it looks good...