A pedal is a must for the Vypyr series, i have a Vypyr 120w myself and uses the Sanpera 1 for it. However the pedals, or at least the Sanpera 1 is functional but low quality. It's wonky, the "Wha"/Sound pedal is practically unusable, and kinda ugly really (was silver when i bought it 2011).
However, i still use it. It is really a must to have a controllpedal for the vypyr series. For patches, looping and overall kontroll och the amp with out back problems. I have seen people use other types of pedals but i have myself never tested, would recommend to check it out.
The pedal still works after 6 years but i really don't find it to be worth that type of money. The effects comes from the amp and the "wha"/sound pedal is as i said crap. Poor fit for a good amp.