A lot of factors come into play, the biggest one your zone. Even though we had the warmest Christmas in 20 years today
I am manipulating, controlling, my ST and LZ in various ways. Like I said in another post regarding dwarf mangos --> "Am shortening the internodes on my Lemon Zest and Sweet Tart via Bonzi (a PGR) apps and severe topping right after planting. Lemon Zest has responded really well and it's super vigorous. Topped it down to a stick this spring, right above the first node."
This is my ST a few days ago, grafted in late winter this year. I wrapped the new foliage to harden off (lignify) it into more of an upright shape. It was very open.
My LZ is beautiful with 8 scaffold branches, 4' tall. Here it is topped down to a stick this spring. It was 5' tall when newly planted.
IOW, you're in control. Gitter done.