Depth is key factor here.
My vW nemesis is laser etched and this batch the engravings are actually raised off the
mod instead of into the
mod, presumably due to molten metal and the new technique.
Over time that raised bit will erode, revealing the engraving beneath it , which WILL be 'into' the mod.
My tree if life mod is deeply engraved so those will last quite long. I have polished/brushed one of the tubes however, and that engraving is noticably shallower.
My new brass nemesis is machine engraved, so something like that will last absolutely forever. CNC engraving is much deeper.
The stingray appears to have significant depth whereas the nemesis is more fine and detailed, and crisp.
I wouldnt be too concerned unless you plan to polish frequently. Use a non abrasive polish under those circumstances