I am a happy shape5 club member and I want to make sure I do you guys right, because of how helpful and professional you are. I have used up my domains from my membership, but I have sold a new customer and I want to pay for their template. I want to set them up with an account, even though they will never actually use the forums, while I ask support questions for their account's domain. Basically, I want to post questions under my user name, but for a customer who wants me to build a site using your template and I want to make sure you know that I am not exploiting the club when I ask about their domain on the forums. I am a fan of shape5 and I want to make sure you get paid and you know I am helping sell your work.
As mikek said a dev account sounds like the best way to go.