ProPhoto vs sRGB

I hope someone can help...

I've taken a large number of Photos for a recent job, it was quite poorly paid so i'm not willing to spend long editing the photos. The photos are to be burnt to a disk and given to the client for their use.

As the photos were shot in a night club with red gelled disco lights illuminating parts of the scene, daylight coming from several windows and my ringflash filling the shadows on the subject, I have noticed clipping in skintones, mainly from the red gelled lights when working in CameraRaw.

I indend to process the Photos in CameraRAW only and save as jpeg to be burnt to disk. If I change to ProPhoto colour space, most of the clipping/banding disappears.

If I then save as jpeg, leaving ProPhoto 16 bit selected, are there any implications should the client wish to print these photos in a highstreet photo lab or display them online on a website?