Our company uses the flex+derate for Take-Off where possible. However I am interested as to whether there any any operators who use some sort of software package which would give you all 3 V1's in preflight calculations for some kind of situational awareness.
For instance you are light as in Tarik's example with a low V1 go, but your company gives a balanced field V1 slightly higher. Is there anywhere you could obtain a high V1 stop for the same take-off criteria.
I ask as lets say for instance you get to the V1 low, and soon after get some kind of manfunction (jammed controls, etc...), if you knew what the higher V1 was, lets say the 149 as from the previous example - you might be in a postion to consider the option of relanding/or aborting if still on the ground and not at Vr if say your speed was not at V1 high.
Not sure if such a scenario is accurate or even desirable as it would add a grey area to the idea of V1 being a stop/go concept but I thought I'd ask.