I just found some brand new models for under $300, so I have now ordered to give these a try. Agreed that all the upcoming features of gen 2 will be welcome, however they will cost nearly double what I just paid. Are they worth that much, plus the undisclosed amount of time I will be waiting for their release? Likely not. So, if you can find a deal, I personally think the gen 1s are a viable buy.
Edit: The AirPods Pro 2 should be tried before making this decision. I will now have both, for different use cases.