Time will tell. Finishing my B.S. in Biology, minor in Chemistry.
Originally I was working on a composite program at SWT that was a straight shot through from the undergrad BS to the PhD. The caveat was that when you encountered what Texas State calls a "Stack" class, i.e. undergrad and graduate class combined, you had to follow the graduate curriculum level if there was a differentiation between the two.
You also were required to start on your thesis as an undergrad and begin the actual physical research, publishing your results as an undergrad, along with a presentation of your research at an end of the school year biological sciences symposium. I want to say there were 5 of us who signed up for it as undergrads. So, technically speaking, I have graduate hours without a BS to show for it. Somewhere on the campus of Texas State resides a copy of:
"The Temporal and Spatial Distribution of the Blacktip Shark, C. limbatus, in the Mission, Copano, Aransas Bay Tertiary Complex"