My opinion is that the Gladius is a decent choice. The 500cc Hondas are also excellent options.
From the bikes I've owned (SV650, TU250X, GSX-S750, Scrambler Sixty2, GSX-R600) I honestly think that the SV (3rd gen) is the easiest to ride of the whole bunch - the Gladius is pretty much the same bike. For me, it's the sum of the parts that work in a way to make it easier to just focus on riding and nothing else. The Scrambler had grabby front brakes, a temperamental gearbox, some false neutrals, hard to find neutral, lots of heat etc... TU has a very short first gear, rudimentary gearbox, weak rear brakes, lack of power for the highway, more of a city bike, etc... Not saying that they aren't great beginner bikes, but these are things that are on the mind when riding, consciously or subconsciously.
So the SV/Gladius has a punchy motor that needs to be respected as a new rider, but ergonomics are good, low seat height, good throttle response, excellent gearbox, reliable, brakes have good feel and aren't grabby, suspension is perfectly fine for the street, easy to maintain. Decent choice.
And if you ever get sick of riding street like I did, it makes for a great first track bike!
View attachment 50938