After reading this article, I'd say that there would be a lot of persasaons who would rather use this than taking pills. Let's look at something, PrEP is for persons that are HIV-, so the chances of that group using this are very slim. Even though this device can be useful for up to a year. Still, the chances of those who are negative using this device are not that good. Now should this device be available for persons who are HIV+ as a treatment option as opposed to taking pills, I could see it being widely used.

It would not be for everyone, but anyone in a high risk category may be wise to talk to their doctor. I believe it could be a game changer in parts of Africa, or any place where infection rates are high.

The benefit of a bimonthly shot is that the clinic can test. I would get concerned about an annual plan as I suspect other STIs would not be detected.

I wouldn't want any implants

I think an implant that works for a year is brilliant. It reminds me of the implant birth control.
An implanted PReP is great for those who are shall we say “party” friendly. This would prevent possible missed doses