But the sequencer? I find it utterly boring and extremely poor. Thats why I bought an external sequencer and do all my magic from that. Gives me tons of more capabilities!
Again, it falls into a slightly 'between two stools' category. It's fairly lacking for what you expect from a full-on drum sequencer, and it's certainly lacking compared to a dedicated hardware sequencer - but it's way, way above what you'd get on most synths.
Personally I don't find it boring at all. Quite the opposite actually, generally I find it intuitive and fun for bashing out ideas but frustrating when it comes to putting together a full arrangement. This is a problem with many sequencers (even hybrid setups like Maschine). Plus you can't sequence the fx sliders externally (big shame). The lack of polyrhythms / different length sequences per beat is a setback though.
What I really like though is the fact you can design complex, evolving 'mini-beats' that get triggered from an external sequencer (or sampled) like an individual sound would normally. It's really, really good for stuff like that.
I've bought a Deluge for more complex hardware sequencing (it's great) but I haven't really paired it up with the Tempest yet. Too busy messing around with my first few eurorack modules!