Has anybody who got the JJ vaccine considered getting one of the other two vaccines as a booster?

So, there’s lots of talk (though no official guidance) about whether those who got the single shot vaccine from Johnson and Johnson should consider getting one of the other two as a “booster”. Some MDs are recommending it and have gotten it themselves. Has anybody done it? If so, were there any issues with your being turned away as already “fully vaccinated”? From my research, some states are actually preventing it. I’d be interested in everybody’s experience (If you got it, Did you do it on a Dr’s advice or own your own? Did you go to the same place to get the second vaccine? Were you hassled? etc)