You can enhance that with a little thought, rollerblades kill your dodge even if you’ve got the right profession (your dodge is halved if you have the right profession, or divided by five if otherwise), but you can make up for that with the right MA and/or gear, namely, you want something that grants blocking.
If you are using your limbs to block, add some armor there and pick the right MA for you: don’t worry about extra blocks unless you’re getting tag-teamed by zombies too much, but look for block damage reduction: Tai Chi has the biggest reduction there (100% of your PER), Taekwondo only grants half as much (50% of your STR), but it may be better if your PER is much lower than your STR (note that having leg blocks as well as arm blocks doesn’t mean you block more often, it just means the damage gets spread over more parts).
If the problem is that they hold you too long and the other nasties reach you, then you might want something more offensive. Some MA techniques are Block Counters, that is, they can only happen when you block and they grant you a free hit, sadly, they aren’t that common: your options are biojutsu (a pain to get, requires skill 4 AND armored limbs), Brawling (skill 5 but easy to get), and Dragon (obtained at skill 4). Out of them, Dragon has the highest damage potential (you need high INT for that tho), and it gets bonus damage and accuracy if you moved before attacking (which should be the case for your roller).
If you’re going with a weapon, you can’t go wrong with Fencing. Yes, yes, the weapon selection sucks, but every one of them has the Blocking quality, and Fencing has a Block Counter technique that hits for +50% stabbity and stuns on top of getting a +2 stab per move (max 2 stacks), so if a shady surprises you and you block, it’s going to be in a world of hurt.
The other good option is eskrima, eskrima hits hard and fast, and you want that so you can get away before some damn shocker ruins your day.
Don’t go Niten early tho, by the time your character stops posing around like a weaboo doing the slow-as-fuck water cut, you probably have 3~4 zombies that got far too close to comfort. Niten is only worth looking at when you have enough skill to use the nice techniques.
Traps are something to take a second look at, they don’t do anything for the shadies, but for everything else? if you can handle the weight, the extra mobility of rollers mixes well with some of those… or just roll around with a hose, a jerrycan and a lighter 