Last week I did two of my nails with OPI gel products (base, color & top) and three of my nails with gelish. the opi nails lasted 6 days, the gelish is still hanging in there. the nails I did with OPI were the ring and pinkie. I happened to look down and see that they were peeling off at the tip. The good thing is I didn't really have to peel them off.. they kinda lifted off cleanly.. no layer of nail with it. Nail plate was shiney and healthy.
My hands take a lot of abuse with water, hair treatments, etc (since I don't like wearing gloves all the time).. my gelish usually lasts 8-10 days. I have very oily nail plates..and I tend to use a lot of hand lotions during the day.
My hands are in water almost all day too. I haven't tried OPI Gelcolor yet but am getting amazing results with the OPI Gelshine that is sold at Sephora! 3 1/2 weeks so far. changing only because of growth and I want a different color. I did use the Gelish base and top coat as they seem to be a little more adhering to my nail.
Seeing as you already have the Gelish product try using that base and top with the Gelcolor in between. I would love to hear how you make out