What is everyone's thought on this?
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I think bathrooms with multiple stalls and sinks should be for the specified gender, but single unisex bathrooms can be for anyone. They should be given access to the unisex bathrooms, even if it means going to staff area. In Sweden there are single unisex bathrooms that anyone can use, and they include their own sinks - that system works well for everyone.
On a side note, I have been to a bathroom at a hotel in Sweden where there were single private stalls anyone could use, but the sinks and mirror were open to both men and women. I did feel fairly uncomfortable with men being there.