I used to be a climber that skis to climb, these days I'm more of a skier that climbs to ski. Depending on your focus, the appropriate gear is very different. I agree with a lot of what Ibex says, but my view is slightly different.
If you are strictly looking for an approach ski setup, stay away from tele gear altogether. First of all, you likely want to ski and climb in the same boots. Climbing in tele boots is certainly not impossible, but sucks in comparison to either climbing or dedicated AT boots. The duckbill toe on tele boots can severely restrict kicking steps and front pointing, and some crampons do not fit tele boots.
Tele bindings are great for skiing downhill, but AT bindings are better for skiing flats and uphill/skinning because there is less resistance at the pivot point on your binding. The pivot point on an AT binding is hinged at the toe, on tele bindings the pivot point is at the ball of your foot, and requires the skier to flex the boot/foot in order to move the ski forward. AT bindings are easier for most folks.
There is also a serious control difference between free heel (tele) bindings and fixed heel (AT) bindings that may put you on your ass, at least more than you would like. Also, a lot of tele bindings (certain cable bindings) are prone to breakage.
So get AT bindings, preferably silvrettas that will accept virtually any welted boot. That way you can likely ski with the boots you presently have. If you had dedicated AT boots, I'd tell you to get Fritschi Diamirs, which are releaseable and ski great. But they are only compatible with dedicated AT/DIN boots -- i.e., not compatible with yer standard welted mountaineering boots. Dynafit also makes great touring (light) bindings, but again, not compatible with welted mountaineering boots.
Skis: for approach skis, use just about anything. The more beat up and ugly, the less likely they are to get ripped off. Short for better control, wide for better float and stability with a pack. Light is a bonus, and dedicated AT skis are the lightest, and really not that expensive (K2 shuksan, Atomic Tourlights, etc.)
Go forth and ski.