I have such a machine, but from V-Zug, and have had it for years and am very satisfied with the device.
Ironing shirts starts when shopping
The best so-called non-iron shirts in 100% cotton are from Seidensticker, Olymp, Eterna, & Kauf. I can load the machine with 7-8 shirts (a week's supply); of course, the shirts must be hung on hangers to dry immediately as soon as the steam program is finished. I lightly iron the dry shirts briefly with a good steam iron (e.g. Tefal) before folding them – that goes very quickly. You could also wear them without ironing again; after half an hour of wearing, you probably won't see a difference whether the shirts were ironed briefly again or not.
With regular shirts, the difference in time required is of course even greater.