Experimental/bench/field scientist/biologist = someone actually doing something at the bench/out in field
Computational/Bioinformatics/Informatics/Data Scientist = Everyone else not doing actual bench experiments but still contributing to data management/analysis

Many may wear both hats at different times.

While the distinction will persist for some time I believe the boundary is going to become more fuzzy as time passes. I already see more and more people writing code to acquire and/or work on their data (before anyone asks: yes, you may have to write code to acquire wet lab data, for example, building a classifier so that your microscope only acquires images of what you want) and while I now spend all my time on the dry side of things, I consider myself a biologist because I work on biological questions.