Yebo yes Silver! I use the Nautilus Tanks 98% of the day and night and only use the mPT2's for a quick change to other juices for a change and to let stinkies test...
I'm really impressed by how long the coils are lasting... I'm on about tank refill number 5 and the coil is still going strong... so far so good and no taste change as yet... I need to get a notebook and actually record refills and coil changes because I haven't been and just change coils when I feel there is a taste degradation... haven't had it on the Nautilus and just changed the coil once when changing juices...
MS Excel works wonders for tracking things like that, and you can make pretty graphs as well.
Are the Nautilus coils rebuildable?