Generally, you do't need any special gear for Borah at this time of year. It should be almost completely dry. If there is snow in the saddle after Chicken Out Ridge (COR) then it is only 50-60 feet wide and there is usually a deep trough across it.
As for a rope.... some folks have used a rope on COR, but most don't. Then again, many folks do turn around when they get there because there is some exposure to deal with. COR is well before the summit. The final bit to the summit has sort of a trail, albeit through lots of loose rock.
Here's a trip report with some pictures of the route:http://www.splattski.com/2003/borah/index.html
And here's a picture of the upper end of COR. This flat area is the saddle that sometimes holds snow. The steep area right in front is 15 or 20' tall, but has big foot holds and hand holds.