I was looking into these, and you are lucky to get anything smaller than 80 x 50 x 20mm for the Watt's Up version and while Sicarius' isn't as long, but still has the bulk. Then there is the price...
Soon, and actually already, you can get a PWM based regulating control board with a smaller display (not all the features, but how often is all that info necessary) that is much more compact and comparably priced.
These here seem over the top for anything you might carry with you, but for a power supply+ PT setup, then sure.