I am more than happy to take a vaccine - I am signed up for the trial as a volunteer but unlikely to be called at this point, I will if they call me.
I have done a medical trial before for a med, it really was no bother and the medical checks they put me through were very thorough.
I am married to a clinically vulnerable person and volunteer with many others so for me as a youngish fit healthy person I feel the vaccine is very low risk/high gain.