I have a full head and had the same worries and hesitated years to go fully sly. My concern was what other people would think, but the problem was inside me!
My first full headshave was 10 yrs ago. Before that I was already cropping very short and cropped shorter each time, until I asked the barber to try a #0. Then I shaved what was left at home. I must admit I was initially shocked seeing my bald head at the mirror, but got accostumed quicky and LOVED it! Not too many negative reactions from other people... in fact many people, especially women, said the bald look was great on me!
I regretted not having done it before.
My advise to you is trying short crops to get accostumed.
Anyway, the difference between a #0 and a sly head is only a week. So if you don't like it simply let it grow back. But I bet you'll get addicted like most of us!
