Um, not really. From the in-game point of view, yes the alternate magic types look different, but in a game mechanics point of view? They really aren't all that different.
The answers to your psionic questions is very easy, and found here:
http://www.d20srd.org/srd/psio...nicAndMagicalEffects
Expanded Psionics Handbook:
The default rule for the interaction of psionics and magic is simple: Powers interact with spells and spells interact with powers in the same way a spell or normal spell-like ability interacts with another spell or spell-like ability. This is known as psionics-magic transparency.
Similarly, all the things you've mentioned? While they have different rules for using them (ie, no spell slots used), they all end up being pretty much the same. Binder are noted as gaining Supernatural abilities, which follows the exact same rules supernatural abilites from the core books follow (ie, they don't act as spells and thus ignore SR and can't be dispelled). Shadowcaster's mysteries are considered spell-like (or eventually supernatural abilities) and thus follow the same rules as spells and supernatural abilities. Truenamer's utterances... will rarely work, making them a waste of time (interesting concept, but they rushed that section out the door, and you can tell).
Incarnum + Vow of Poverty isn't all that insane since you still can't stack multiple bonuses of the same type, and guess what many soulmelds and VoP have in common? And while incarnum users do have an issue with equipment, they still do have uses for their allocated wealth that VoP doesn't cover. The vow only really covers basic defenses and a little offense, and gives bonus exalted feats. Of which there are few, and most are very small bonuses for very specific situations.
Really, it is only hard if you don't have access to the book for reference. That I understand. But give WotC this one: they do actually think of SOME issues before publishing a book! Not all of them, of course... the definition of the 'ally' for example, which is different in Miniatures Handbook and Tome of Battle.