The blow-off hose is working great. The foam just seems to be flying right through the tube with no clogging. I will never use a air lock during the first days of fermentation again! The tube is blowing out bubbles about every 3-5 seconds. I do not see any clogging in the tube at all.
I checked on it this morning before work and it looks like it is starting to slow down. Some foam has settled in the tube and the CO2 pressure is slowing a bit. Depending on how the tube looks when I get home, I might replace the blow-off hose with the air lock since the beer is nearing the end of the primary fermentation stage (when the yeast is most active).