I've been working in Portland for the last few months, and have used Clear exclusively for my office VPN, browsing and streaming from the UK (Orb & Slingbox). For $50 a month you can't grumble.
However, you really need to check the coverage where you are likely to be using it. It works great when I'm at my desk (9th Floor, near a window), but I get no coverage at all in the middle of the office on the ground floor.
Same with the hotel - it works great on the upper floors, but no so well on the lower floors. The first hotel I stayed at didn't seem to have any coverage at all (near the Lloyd Center).
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