Yes, but ours is not VSA.
When I first design my system, volume is not a factor in my design at all. I did not volume for plotting the target lines on my chart.
The reason I have included volume is because, for commercial purpose, majority of people believe in volume.
I have my own criteria in picking volume. If you look at my chart, those “diamond” shape icon placed below the price bar indicates that volume is picking up. Some who are using VSA has enquired whether those signal is based on VSA or similar… my reply is that those “diamonds” are not VSA.