Have heard extensively or owned: Model 1, Rainmaker, Sky.
The first two are 4 ohms, the sky is rated 8 ohms (though haven't seen measurements of it).
The thing I notice positively about their speakers is clarity and speed. Very good integration and coherence too. Totems are'nt a ho hum easy listening speaker, they let you know they are there, whether you want them to stay is another matter. Other less positive traits are a character of dryness and brightness at times. And anomalies which are either in the recording or the speaker itself. This trait is less so with sky than it is with model 1, Sky being more "forgiving", but we're talking Totem here. They have qualities other speakers don't, and they have qualities other speakers don't. Since they are small, its no problem to pop them on or off a system. No idea how they are with NAIM.