The midrange has some warmth, as in it is intimate and romantic, but the speaker itself is not "warm." A warm speaker is a flawed speaker. I think the depth that the SoundScapes offer gives a perceived warmth, but what you're actually hearing is a better sense of space and accuracy; it's just a natural, believable sound and it draws you in quickly. In comparison, a non-open rear wave design sounds more forward or "in your face," but that is a product of the design.
Hehe, I'm working on getting the go ahead to snatch up a pair of Philly 2's, but no guarantees. We just bought a house and have other expenses. But if I hear/purchase a pair I'll be sure to keep you all informed.