When I bought my MVP 2.0, I also bought a VV 3.0 at the same time to have something smaller and easier to take with me. It is an excellent complement to the MVP 2.0.
Same exact features (3.3 - 5.0 volts in 0.1 volt increments, 6.0 - 11.0 watts in 0.5 watt increments) but in a much smaller package. Yes it only has an 800 mAh battery but since it also functions as a passthrough and can be charged with a standard micro USB cable, it is easy to find somewhere to charge it a bit if the battery runs low.
As it is winter right now, it is very easy to carry my MVP 2.0 with me everywhere I go, so I haven't been using my VV 3.0 that much. But in warmer weather when you have no jacket the VV 3.0 is easier to carry.
It's very inexpensive -- I paid $35 + tax at a local B&M shop for the express kit with the VV 3.0 and a nifty and very portable retractable USB charging cable. You can easily find similar prices online.
The only negative is the fact that the VV 3.0 has a slightly different user interface. It has +/- buttons to adjust the wattage or voltage setting, and switching between VV and VW modes is also different. Sometimes I find myself using the procedures for the MVP on the VV and vice-versa. It's only a minor inconvenience for me.