Would you buy this as a main iron (for smd work) ?
Portable when a power supply or battery bank/pack is available. Firmware can be updated. Looks like large amount of thermal mass in the tips which can help deliver heat.
I'm not trying to hate on it, there are just many downsides.
Has no storable temp presets. Not really designed for easy tip swapping, limited range of tips. Has a warning in the manual that 40mins use it gets to between 50-60C (so could be uncomfortable to use). Possibly be slippery after a while with hand oils (I know but I had to point it out). If you need a work horse or in a dirty environment perhaps not the best choice.
It's not ESD safe by default, requires a separate ground wire to be attached to a screw. Requires you to supply your own 24V 2.7A power source for full 65W power. The warm up time is on that supply to reach 300C/572F is 11s . On a minimum 12V 1.4A supply it's 40s. Aside from no power supply, there is no stand, no sponge, no brass wool etc (you get the idea).
The working tip distance is deceiving and has no finger guard. Not really suitable for large hands. Here is a comparison photo of the new Pace TD-200 120W iron that comes with the ADS200 station. Note the guy with the TS-100 iron is really bunched up on it.