These days AgileBits(the 1password people) are doing everything they can to get everyone onto a subscription plan, and are breaking local vaults slowly. Most people don't seem to recommend it anymore.
The only security issue really is the online vault(which isn't a security issue per-say, but is a security weakness since your passwords are no longer under your direct control). This may or may not be an issue for you, depending on your security posture.
But other researchers have played with 1password and most have historically had good things to say about it, except recently when they started pushing everyone to the online vaults like I mentioned.
And yes, he is a security researcher for Google.
I just tried it and the lack of plugin or sync support was a deal-breaker for me. I have plugins for syncing to cloud storage, for browser integration, for OTP generation, etc., none of which it seems to support?