In most cases No. If you just carry a pitchingand a sand , you will have a big gap in terms of loft and distance. Let’s say your pitching is 46º and your is 58º. That is a 12º difference. At about 3 yards per degree of loft, you end up with a 36 yard distance gap.
Ideally you should have no more than a 5º difference in lofts.
If you don’t have the right lofts, you will end up over swinging on some and taking partial shots at other greens. That is not a very good situation. Ideally, you should be taking full shots with yourat the greens.
Solution: Carry a third wedge to bridge the gap between your Pitching Wedge and Sand Wedge. It’s quite often called the Gap Wedge or A Wedge.