O.U.I.

I was talking to a couple of guys at my department about OUIs. Normally when I lock someone up for O.U.I. I will also charge them with 90/24 (Operating a MV negligently as to endanger). The reasoning is the mere fact that your operating a motor vehicle under the influence is operating negligently.
Well today I was told by the powers that be that unless someone's life was actually in danger, to simply charge OUI. I could go round and round, but left it alone.... In my opinion the person I'm locking up is in danger of him/herself....
Just looking to see what everyone else does. Am I the only one that charges 90/24 x 2?