My tourer has a dynamo front wheel, which is great. It's so handy* that I ended up using it for most of my commuting over the winter, despite having a hybrid that should serve as my foul-weather commuter. So I'd quite like to add a dynamo to the hybrid which does a few tens of km per week. The budget simply isn't there for a new wheel** (or rebuild, but the rim is old) plus lights, but a bottle dynamo from a reputable brand is only around £/$/€12 and my tyres (marathon plus) already have tracks.
Bottle dynamo vs. hub dynamo covers some of it (longevity, tyre wear), but I'm interested in day-to-day reliability as opposed to longevity, i.e. can I just jump on and the lights work assuming I don't clobber it? In all weathers? I can with the hub system and this isn't addressed at the linked question.
* Clip-on lights (the vast majority of battery lights) get stolen where I park (and I can't change that) so have to be removed.
** I will downvote any answers that mainly suggest a hub dynamo. I know they're better in many ways, I know you can get a wheel for ~£100 delivered, but that's too much. Unless there's an option that's similar in total price to a bottle, forget it.