Is it worth carrying on as a guinea pig, if a vaccine has already been found?

My third appointment with researchers this week, as a participant in Covid-19 vaccine trials, was overshadowed by the news that the Oxford vaccine will probably be available to older folk like me in the early part of next year – maybe as early as January or February. The vaccine I am trialling – the Novavax one – will have test results in January, and probably be available in the summer. So what happens to us guinea pigs when the Oxford vaccine…