"I would think that would be a concern regardless. " Yes it is, but you made no mention of what you would do, it sounded like you were just going to stick your primo stave in and hope for the best. That's not a good option without knowing the potential risks and how to combat them, so I just wanted to bring it to your attention, before you took the plunge.
It is definitely an interesting idea. You might have to be the pioneer when it comes to how suitable the process is for bow staves, and different species of wood.
Its an area that might yield good results, but it would need a fair bit of research.
I haven't heard of it in old methods from the pre fibreglass golden era of archery. I do remember at least one article that mentioned the idea of infusing green bow staves with PEG polyethylene glycol solution( no vacuum necesaary). Woodturners use it to turn green wood. I don't know if they actually tried it with staves. It would quickly allow the wood to season without degrade. Not sure if it would have a positive or negative effect on set, or cast.
From the same era pressure treating timber, to increase the density, and strength of lumber was also suggested. It seems to work best with softwoods, and was using successfully to create extra strong, and durable arrow shafts.
Once again I can't remember any successful results for bow staves. Fibreglass backing and facing became the standard for archery bows and the industry and they lost interest in further research down these avenues. (so there may be some promise for wood bows in these areas of research.)