I probably wouldn't bring skis. Ordinarily, in the interior, there is significant sun-cupping by latter July. Also the runs, themselves aren't terrific at this time of year, most of the snow-covered parts of the glaciers are flat and the steeper sections are usually broken or bare ice.
There has been so much melt in the Bugs since the 70's and 80's. The glacier between Eastpost and Snowpatch/Bugaboo (above the hut- I forget the name at this moment) has probably lost 3/4 of it's former mass. The Bugaboo tongue is much thinned, narrowed and retreated. Probably the best of the skiing would be over by Anniversary. The Vowell Glacier never was that great of run, even in winter, quite flat except for the headwall beneath the Howsers.
