New alignment system (D&D any, PEACH)

[Gnorman]

Unearthed Arcana says your wrong, and that I put in my previous post

I'm afraid that your interpretation of the rules is the incorrect one. If you continue to read on in the very same section of the SRD, you'll find the following quote:

"These paladin variants aren't meant to be unique classes in and of themselves, but rather alignment-based variations of the paladin. They have the same Hit Die, skill points per level, weapon and armor proficiencies, and spells per day as the standard paladin. Their class skill lists are nearly identical, with exceptions noted below. Their spellcasting functions identically to that of the standard paladin (though their spell lists are somewhat different). When a class feature has the same name as a paladin class feature, it functions the same as the one described for the standard paladin." (emphasis added).

This strongly suggests that the paladin variants fall under the "variety of paths" category rather than the "wholly separate class" category. Ergo, multiclassing between them is barred.