Hi Richard
The general advice is that beer is bad, as it is essentially "liquid bread" and contains both carbs and sugars.
However, I have found I can still drink beer (and I admit I drink too much...) and still control my FBG levels.
But I also found I had to leave real ales alone, and for me, the strong lagers actually seem to do less damage.
I think Coors light is probably the one I have found to have least effect on my FBG levels - but, to quote crocodile Dundee, it tastes like......
I would say tread carefully and test appropriately, and of course, Responsibly!