[Aerich]

I never used chill touch as it was too dangerous for my mage to be in such close contact with the enemy.

Same, Calagari. I can remember a lengthy discussion about the value of touch spells (specifically Shocking Grasp) a few months ago. I rarely use it, the same as I rarely use any touch spell.

However, a dual or multi class mage would have enough HP to get in there and use those under-utilized touch spells. I was hoping that touch spells can "stack", in the sense that one could cast two or more and have all the effects happen with one touch. That would minimize the risk and maximize the benefit.

I could also see touch spells being a benefit to a DC or MC Mage/Thief. It would be a good complement to a backstab, to finish off anything that survived the initial hit. The nice thing about SG is that it does decent damage and has a casting time of 1. Alternatively, you could just memorize Magic Missile and get the same result, which is why a lot of people don't bother with the 1st level touch spells.