Cascadia.wiki is currently being reserved and could be made available at my request despite being considered a "premium" name. The company I work for hosts a wiki farm and also provides hosting services in addition to .wiki domains. It has the capacity and infrastructure to provide quality, reliable hosting.
I am trying hard here to not pitch my company, but merely to express that this offer should be interpreted as an "in-kind gift" by a company who is invested in a strong wiki community and wiki culture. The CEO (my boss) is a long-time wiki enthusiast (some of you may know him?) who lives in Portland and is excited about the Cascadia affiliate. He has offered to take care of the domain registration, hosting and renewals. More or less, whatever the affiliate wants, he'd like to find a way to help and to reduce stress on CWUG.
I don't think tax-deductibility comes into play here, since CWUG is not (yet at least) a registered non-profit. However, if we were, we would budget for domain registration and hosting, and if that were provided to us for free by a company, we would consider this an in-kind contribution. The same concept applies here, except in this case the company is not expecting a tax receipt. I would also argue that CWUG gets the added benefit of not being burdened with registering a name, subscribing to a hosting service and having to remember to renew either.
That being said, if the group is more comfortable with tasking someone to accept transfer of the domain and maintain hosting/renewals under his/her own name, we can help with those arrangements, too. I am not sure what additional detail is needed, but if you have specific questions or concerns, I'd be happy to respond.
I won't be offended if CWUG decides to go another route. As a group supporter and prospective board member, my goal is simply to bring what I can offer to the table so that it benefits the group. Yes, I have a COI, but I am acting in good faith and so is the company I work for. IMO, we are lucky to have the registry for .wiki in Cascadia and we have an opportunity here to form a partnership with a "local" company interested in supporting the wiki community.
Jason