The way I see it is like when I do rep range for two weeks. I find the endurance gains from doing slightly lower weight and much higher repetition is not only easier on my joints but it also works the muscles in it's own way. All forms of fatigue trigger the metabolism for hypertrophy, it's just that what kind of fatigue determines what type of hypertrophy... make sense?
It's like when I run for 2 hours, I am definitely strengthening all the muscles used in running, and it's a great improvement factor in my running ability but it's not going to help me with sprinting very much.
Honestly I wouldn't be so concerned with your strength abilities. You're not going to come out of two weeks of endurance lifting lower weight at higher reps, and not be able to use the weight you were before hand. If you were say bench pressing 250lbs on the flat bench in an 8 rep set, and you do two weeks of endurance using 200lbs with 12 rep sets... you'll still be able to come back to lifting 250 lbs. Muscles have good memory and you're still training so atrophy isn't going to affect you enough to deplete your abilities in only a couple weeks.
Don't forget to keep your diet on point also, feeding your muscles what they need before and after every workout is essential to maintaining and growing.