Love the Zercher squat (that's why it's my avatar). However, to answer your queston, I have a few. What is your current routine like and geared towards? Powerlifting, muscle gain, conditioning for sport? I used zerchers extensively when training at home (they don't require a rack) and found them to be a very solid assistance exercise for my regular squat, which went up the first time I tried it after a long layoff with no direct training. But my style is more wide stance, hip dominant, sitting back like, in both the zercher and back squat. You have to decide what capacity you're going to train the zercher. As a main lift? Accessory lift? There are other variables to consider as well as your stance in the zercher vs that of your deadlift style. If you pull sumo and zercher with a wide stance, your hips may be smoked before you even touch deadlifts. Likewise, if you kept the stances dissimilar enough i.e. narrow + deep in zerchers and sumo for the deads, or wide in the zerchers and conventional in the deadlifts, there will be enough "same but different" to not overtrain the same movement patterns. If you train lower body 2x a week, both of these lifts will make effective main lifts if you choose to use a similar stance in both, thus doubling your groove. Zercher power to you!