Huel is a good source of nutrition for any time of the day really!
But I personally find it is absolutely perfect for breakfast - it’s the one meal that is really important but is also the hardest to get well balanced.
Most people skip breakfast or just have yoghurt or fruit or toast or cereal - none of which is complete nutrition.
Huel is ideal - contains everything you need, and it’s super convenient and quick to consume.
I also find it doesn’t make me sluggish in the same way a large breakfast would, and fills me up for way longer than a light breakfast would.
Can’t think of any downsides at all.
Only thing I’d recommend is to switch to powder if you can in any way find the motivation to make it yourself (it’s super quick and easy once you’ve found the perfect flavour, quantity and thickness you like).
The powder has superior nutrition in comparison to the RTD and so is much better for regular consumption (and save the RTD for times when powder is impossible / impractical).
There’s also the advantage of being able to make it up to your own personal exact calorie requirements. There’s also much more possibilities of flavours if you like variety.
It takes a few attempts to make the perfect Huel from powder, but the forum will help you with that.
Although saying all that, the RTD is way better than your current (non existent) breakfast, and is still really good nutrition.
So no, no down sides really !