Yes, tried it with a low carb/keto diet. I found it ok, took a bit of getting used to, first few weeks I felt lethargic, but I found it hard to actually get my required calories into just the one meal, I didn’t want to have too much of a calorie deficit.
For me, intermittent fasting & low carb/keto works best (I just skip breakfast and/or lunch every other day) and eat healthy low carb/high fat meals, I steadily lose the weight whilst still getting enough calories and having energy. I find long rides are fine at a steady pace, did a 200k Audax last year eating nuts and drinking zero cal electrolyte drinks , felt fine at the end too.
If omad is working for you and you’re happy with it then that’s fine, I’d look at it as more if a lifestyle change though rather than a diet, that way you might be more likely to stick with it longer term. Don’t be afraid to change things around and try something different either, you may find 2 meals a day is better for maintaining your weight going forwards. There’s lots of info out there on the subject, but it’s about what you find works for you,