The specs of the Silverback are interesting. Could not see a price as it is not available in the US.

Not my style (I like old school looking bikes). I skimmed the geometry. One thing that might be troubling is the top tube length. Not sure if they meant the actual tube or the virtual one, but if it is the virtual one the handlebars in the small are quite far away for a shorter or female rider. For example there is "concern" that the Soma Buena vista top tube is really long, and in the 54cm (medium) the tube is 555m. The small bike above has a top tub of 565!

Sizing might be difficult.