Upload & Sell: On
There is no solution for a non-gripped ball head that will be as comfortable at a DSLR grip. I picked up a sub-$100 Vanguard pistol-grip head for the 7 and, while overall it's still not as comfortable, I am very pleased with it. The heaviest lens I've put on it is the Nikon AIS 200/2, but I couldn't get it to slip. I find it more comfortable to use than the joystick or side grip models with equal or better build quality. I also like the size and placement of the tension control knob. It looks like a garden hose attachment, but it works very well.
That said, if you just want someone to tell you it's okay to give it up, it is. I can't remember who said it, but as goes the quote, "When you start comparing your mistress unfavorably to your wife, then you have reached the end of the affair."