Can the two versions both exist on the same PC without any conflicts?
Yes. Any number of versions of Vegas Pro can happily exist on the same computer at the same time. I've got VP16, VP17, VP18 and VP19 on the one computer. Some on the forum have all versions going back all the way back prior to VP10.
Yes they can. I have several versions installed. Just remember that project files saved with newer versions won’t open in older versions. Save them first with a different name before you open them in VP19.
Thank-you Dexcon, Jack S and vkmast for your replies.
I wanted to be sure that I wouldn't lose SVPro10 as I have been using it for many years and is a trusted friend. The only reason I am interested in Vegas Pro 19 is its capability for working with 360 degree video (from my GoPro Max).