I have had numerous pairs of La Sportiva approach shoes. The Ganda Guide, is by far the most technical. This shoe is similar to the Ganda, but in a high top version and comes with a roomier toe box for long approaches. So far, the shoe has great support when carrying a heavy pack on fourth and easy fifth class terrain. It features a full length lace system right down to the toes for micro adjustments in tightness. The shoes utilize Vibram Idro-Grip for ultra stickiness with a slip lasted forefoot and board lasted heel.
For how beefy the shoe is, it basically climbs like a rock shoe. I have been able to lead up to 5.9 and follow 5.10 in these shoes. They climb great and are comfortable enough for long approaches. I suspect that these will hold up to seasons of guiding abuse and see many resoles!