Richard
Maybe so, maybe not.I could actually see the worth of using non-Kabbalistic numerology with Tarot, provided it was a fairly neutral Marseilles-type of deck.
I tend to agree with those who seem to think that folk numerology doesn't have any definite relation to tarot. There is a different sort of numerology that is catching on among new Marseille readers. It consists of relating each pip to the corresponding trump with the same number. Mary Greer thinks that this is almost equivalent to using Pythagorean number symbolism. Whether or not that's true, one thing is certain, the pips as trumps method ultimately associates each pip with the corresponding Sephirah (whether or not the user realizes it). That can't be all bad, but it does circle back to Qabalism. (It also raises the question of what to do about Justice and Hod, but that issue gives me a headache.)
What I haven't studied much is how Pythagorean symbolism relates to the Sephirah. I would imagine that Westcott's numerology treatise might be applicable, but I tend to fall asleep reading his stuff.