Should I keep my 35mm F2

I have made an executive decision after trailling a 17-55 F2.8 on my 60D to keep it and sell my 24-105 F4L. The versatility of the F2.8 throughout and the 17-24 range came into its own at an event I shot indoors last night. I also found the results when compared to the 24-105 to be both sharper and more vibrant in colour.

My question is, should I keep or sell the 35mm F2 which I bought as a low light option to go with the 24-105 F4. Am I really going to have much use for this lens when I have F2.8 throughout the 17-55 range?