Although mountain glaciers are not that important with respect to SLR, they have their own set of serious consequences coming for human civilization. I don't think that many people - even those who accept the reality of rapid AGW/CC - realize the dire implications of mountain glacier melt and average snowpack reduction as in California's Sierra Nevada mountains.
I have not found a paper or study with a detailed analysis of world-wide human dependency on these water sources and the implications of the dynamics of the involved hydrology trends. However, a post at the the Seametrics blog (http://www.seametrics.com/blog/climate-change/
),although without citation, states that: "More than one-sixth of the world population relies on glaciers and seasonal snow packs for water resources."
That's more than one billion people!
The origin and primary flow of water for many South American and Asian rivers depends on Andes and Himalayan glaciers respectively, although countries in the lower elevation rain-forest regions of some watersheds can be lightly to heavily supplemented by monsoonal and other tropical rainfall patterns.
In a warming world, river flow in some regions will likely increase as glacial melt increases, but eventually decrease as glaciers shrink - lose volume - past a certain point. The temporary increase will encourage population growth and development, but then slam the affected areas later with water shortages. Coupled with "water grabs" via new dams on rivers such as the Mekong, permanent and irreversible flow reductions may already be happening, especially in places such as in China, Pakistan, India, and SE Asia.
With a significant increase in atmospheric moisture content capacity with each degree rise in average global temps (7%?), and a likely shift to more frequent heavy regional precipitation events alternating with droughts that are likely to be severe and extended, we may be on the threshold of some serious civilization-impacting weather events and short-term climate changes.
Although SLR will be easy for everyone to see as it kicks into high gear, the quantification of glacier melt on river flows, coupled with the impacts of weather patterns and drought cycles, will be much more difficult to quantify and assign attribution.