Jet Set, you can have a situation where your V2 is less than V1 but only on very long runways. This is known as improved climb profile and we use it at hot & high airports. This effectively does away with the acceleration segment from Vr to V2 as V2 is reached rolling down the runway and enable's you to pick up more load sometimes upto 3000kg on a B737 at a place like JNB.
Elevation 5500' temp in summer between 24'c and 30'c sometimes hotter.