I feel less strongly about 1 than 2. 1♠ overcalls could certainly work, particularly over a negative response from RHO as it could be our hand and we could easily have a fit, and this might be our last chance to bid ♠ at a comfortable level. The auction could easily be at 3 or 4♥ at our next turn to bid and we'll wish we had done something originally. On the other hand, if it is our hand, we might get a chance to make a takeout double of ♥ sometime in the auction, which is much more flexible and doesn't commit to only one strain, so that is sort of ideal with this hand. If your partner is on the same wavelength and you've agreed to overcall aggressively at the one level in their precision auctions, then I dont mind a 1♠ overcall. If you happen to be playing suction or something, I'd be comfortable calling this a 2-suited hand. If the opponents are in a game forcing auction, then I would be less inclined to stick my neck out.