I work for a safety supply company and we literally carry dozens of makes/models/styles of hand protection.
My suggestion to you is to use nitrile gloves. The are very tight fitting for dexterity and tactile feel for small parts, are impervious to most substances we modelers handle, are relatively cheap, are latex free and don't rip or degrade over time like latex does. In fact, I get my sister-in-law a box every few months for her hair salon. She uses them to keep hair dye from staining her hands and she even throws them in the washing machine to re-use them!
Another alternative is cotton lisle gloves. We sell these to companies that have quality control inspectors handling sensitive parts that can't have skin oils, etc. on them.
Personally, I keep a box of cheap latex gloves around for airbrushing just to keep my hands clean, and a box of nitrile gloves around whenever I have to handle anything that must not have skin oils on it (i.e. natural metal finishes).