Moustache bars, priest bars, touring, randonneur, bullhorns or substitutes

Thanks for the answers, you all are very helpful. It seems that the only alternative is to cut the charge slice.
I have one question thought. Would it be difficult if I buy the Profile Design stoker to remove the colour and polish the middle part? I'm asking this since the stem I'll use is 26mm. Or just buy a shim and not bother.

Recently I built my first single speed bike;

As I wrote above, I finally purchased a Profile Design stoker for it. Unfortunately I had not seen this handlebar in reality before and as it has a constant 26mm diameter, it can be fitted in a traditional quill stem with a 26mm clamp. So, I was about to buy a charge slice until I read a review that says ''it only fits modern stems'' (I presume ahead stems). First review in this page; http://www.evanscycles.com/products/charge/slice-track-bar-ec019151
As I see in this photo the slice is 25,4mm only at the clamp area and then the diameter lowers to 24-23,8mm I suppose, therefore a traditional quill can be used.
Does anyone have any experience ?

Thanks in advanced for your prompt answers.