I limp a little looser than that for sure. I only need 1 limper to limp SC, PP, Axs, Kxs.
I also will never fold PPs in any position unless I'm raised past the point of rule of 15. I guess limping these in EP is considered a bit too loose eh? I don't really find I get burned by it at 25NL though. Not that much 3-betting with all the loose passives floating around.
No doubt I'll have to revise that as players get TAGGier up in the levels...