[maxtower]

After reading goofy's analysis, it looks like you can profitably play suited connectors 45s - JTs with the 5/10 rule considering the implied odds.
One issue at hand is that the 5/10 rule assumes a reasonble chance you'll net an opponent's stack when you hit your hand. This is fine for the made hands because all of them are beating an over pair. The combo draws are not as good because if you push and your opponent folds, you are getting the correct implied odds to call preflop with the 5/10 rule in the first place. If you push and he calls, you'll hit your hand around 50-60% of the time. With the money already in the pot and the fold equity you might have, going all in with a combo draw is a fine play, however I question whether you have the correct implied odds preflop to get yourself into that situation. There is some math that needs to be worked out here, but it appears suited connectors are not as easy a call as pocket pairs using the 5/10 rule.
A good play may be to call with these in position only. That gives you an added advantage when your opponent checks the flop to you.