Any in depth Reactor reviews or users here?

[eniriop]

Anyone using a reactor as a portable speaker regularly? How is the experience, is it a plug-in-and-forget thing like other (bluetooth) speakers and just works as soon as you turn it on or does it require more steps to get it up and running on the go?

Definitely plug in and forget just like any bluetooth speaker. Plus you can pair with the source with bluetooth  and adjust the volume with touch buttons on the speaker : no need to use the app.