Upload & Sell: Off
I 2nd shoot a lot and I mention I'm a Leica or Canon Shooter. I own a Leica M9 and Canon 5D Mark 2. I've only worked with two photographers that didn't mind me using the Leica. All the rest have said, "Can you just use the Canon."
Then there's the conversation about lenses. When I shoot Canon I only use 3 lenses, the 28mm f1.8, 50mm f1.4 and 100mm f2.0. It can be frustrating to explain why, and its always been this kind of "Really?" moment when it comes out, but no one has ever been upset I don't use a 24-70 70-200 combo. But for some reason it's just this assumption everyone has one. And it's amazing how some people don't understand how you can be a professional and be experienced and not own a 200mm lens. Like not having one negates years of education and experience.
Ugh, anyway I'm ranting but it's just one of those frustrating things. Every photographer, hell, every professional in any industry has their own way of doing things, why make someone work the way you work and expect predictable results if you're changing their entire working method. It's like if someone took photoshop away from you and made you do all your editing in GIMP because they use it so it'll work fine for you too.
If the persons portfolio demonstrates a visual style that falls in line with your own, it shouldn't matter how they do it. If they are using a Nikon, a Sony, or a Hasselblad. Just let them work and they'll produce predictable results for you.