Was in Banff for Melissa's road race on saturday, and decided to go do a scramble on sunday. The larches were pretty cool, and there were thousands of people hiking into the valley that day. Eiffel was pretty straighforward - just go up the valley, and it's on your left, with Pinnacle and Temple on your right. I went a little too far and gained the ridge via snow slopes. There is a small trail leading left (off of the main trail) before the upper valley is reached - if you cross the stream there, it continues and follows the ridge all the way, much easier. With snow, the last slopes are a little exciting (slabs underneath), an ice ax is good. There are cairns and trails so there is basically no route-finding needed, which shows this is a popular objective.
The views were absolutely spectacular. Eiffel Tower, a 70m high pillar on the other side of the summit, looks really cool... apparently it's been climbed in 1951 and 1952 and "largely ignored since then" - there seems to be very little beta for it.