Adjusting Shimano brake lever reach

[Twilkes]

I only just found out that Shimano brake levers can be adjusted to bring them closer to the bars, using a screw that sits under the hood covers:
View: https://www.youtube.com/watch?v=GESGpwNLuTQ#t=2m32s


Are there any drawbacks to doing this? Does it reduce the amount of travel of the lever? Is it possible to move them too far towards the bars so the full range of braking (i.e. max braking level) isn't available any more?

 

[Flying Dodo]

This is only on newer ones (last year or so). Older ones need adjustable shims inserting to force the lever open more.

It alters the angle of the lever, so it does move closer to the bar, but it would only be an issue if prior to the adjustment, the brakes only became effective at almost maximum extension and nearly touching the bar.