I never had a suit made by Nick Lopez Tailoring but I did have many pieces altered at his shop. His team was definitely worth the added expense.
Nick is usually found upstairs (where he measures clients, has his fabric books, and constructs the pieces), but his cutting table is located on the first floor. He's always been very friendly and approachable so engaging with him about his craft won't be a problem (in the sense of wanting to get a feel for the tailor, his style, philosophy, personality, etc. prior to committing a purchase).
I'm still pretty new to the world of suiting so haven't made it to the bespoke level just yet. Even though I recently re-located away from Houston, I still think that Nick Lopez might be my first bespoke tailor. He occasionally travels outside of Houston (Austin, Washington DC) as he does a lot of suits for Texas politicians.