In case anyone is interested, I did a quick custom pack with T42 and then dumped Misa into the texture pack (private of course). The GUIs are obviously inconsistent and the fonts are passable, but it looks quite decent and is more than playable even with a few obvious inconsistencies. There is definitely potential for a semi realistic x64 texture pack in FTB. Overall T42 is a nice texture pack and can easily replace Soartex in my worlds. It also nice to have another 64x texture pack which is not Sphax.