liturgies of blood wrote:No it is taken against the unmodified stat line. If the wargear changes the actual stateline such as a thunderwolf increases your toughness and strenght, then you can use that but not if it's a bonus from wargear or a temperarily activated rule such as furious charge.
No, that is not correct. Page 8 makes no requirement for "unmodified", you 're thinking of sweeping advance which DOES state unmodified.
So, for example if you have been reduced to I1 by Lash Whips / Whip Coils then were required to make an Initiaitive Test (Acid blood) then you would use I1
However Halberds only alter your I value when making Close Combat attacks - not a change to your stat line at all times, so halberds would never be used for characteristic tests, well none I can think of.