I was trying out TrueOS a few weeks ago and one thing that really stood out to me was that I HAD to reboot after installing/updating some. I can't recall exactly which packages but I know it shocked the hell out of me.
The OpenRC system is very noticeable on booting as soon as the dmesg starts scrolling you know something is completely different than FreeBSD boot, but the interaction via the command line is still pretty much the same. At least from my limited testing. You still use commands like service [I]service_name [/I]restart
.
Honestly after a week of using TrueOS I didn't like it at all, it seems that different to me. And I don't even want to talk about their forums...when my little ponies started walking across my screens I was effectively done with them.
Other people experiences may be different, but I have been using FreeBSD as a desktop for close to 18 years so I might have come at TrueOS from a different perspective.