I totally feel for you as I have a 2-hour trip each way to work on train and tube and it's not the best, but I don't want to put you off!
I take something slightly different for the nausea, Metoclopramide, but it's a tablet so would be brought back up again unfortunately. I also take Betahistine which I find sometimes helps briefly alleviate the pressure and blocking in the ears.
As for the nausea travel bands, I tried them for a couple of months last year but I didn't find they did anything at all, but as someone else has said on here, it does seem to be that different things work for different people.
If it's your first day back to travelling and work after an attack, I would say make sure you've taken your medication before you travel and make sure you've got your meds with you and a bottle of water and maybe a plastic bag (in case you need to be sick) and a mobile phone if you have anyone you can call to come and help you if you get ill. All of that is really just to try to relax you and make you feel as prepared as possible in case an attack does happen. Take it slowly. I wouldn't recommend looking out of the train window or reading a paper (unless you can read without it making you feel sick then it may be a good distraction during the journey), but instead try to look ahead (or if you can, shut your eyes, although I find I get vertigo sometimes if I shut my eyes on the train) and if you feel really dizzy, try to stare at a specific point in front of you, as someone has suggested. I do that when travelling and at home if I start to feel really dizzy and sick... anything to prevent a spin from happening. If you suffer with visual vertigo maybe wear sunglasses to dampen a bit the overload of visual input. If you suffer with hyperacusis or hearing distortions, maybe try wearing some ear plugs to dampen the sounds slightly. Also, if you start to feel dizzy, try doing deep slow breathing as that will help calm you down and prevent you from panicking which can make your dizziness even worse (that was a tip from my audiologist). Also sit near the toilets on the train so if you start to feel ill, you can easily get up and go and sit in there for some privacy (but maybe don't lock the door!) Others on here who still work and commute may have more and better suggestions. These are just some of the silly things I do to try and help alleviate the symptoms a bit. Also make sure your employers know what you have and that you may need somewhere quiet to go and lie down for a bit when you get into work to "recover" from the travelling, although saying that, that doesn't always work as the travelling can make you feel ill all day and lying down for a bit doesn't always help either, but don't let that put you off!
A lot of it is trial and error and finding what works for you, but sometimes there will be nothing that will work and you will just have to stay at home until it has subsided enough for you to try travelling again, because as my GP told me, your safety is the main concern and if you aren't in control of your balance etc then it's not worth risking yourself or making it all worse and last longer and if you return to travelling to soon, it may just set it all off again.
Anyway, I wish you well Anna and I hope the journey into work isn't too bad for you.
Good luck and take care