I've been EDCing a Super Tinker for a few years now. I have a large number of SAKs to choose from, but use the scissors so often I'd consider them a must.
In the time I've been carrying it, other than tightening an occasional faucet handle, fridge handle, or some other stupidly minor thing, I haven't needed the phillips. AND almost all of those could have been done with the can opener... except the recessed faucet handle screw.
On the other hand, I have never, not ever, not ONCE needed a corkscrew. Ever. EVAR!!
I think what I OUGHT to try is swapping out the Super Tinker for my Rambler, and see if it's all I really need. As I am a complete snob when it comes to beer, and therefore drink a lot of beers requiring a cap lifter, I'd need the Rambler instead of just the Classic SD. Otherwise, yeah... could probably get by with a Classic SD. I just don't think the blades on the 58mm feel sturdy enough. It's a matter of confidence in it, not that one has ever actually failed on me.