What type of investment specifically? TUSD is verified as an ERC-20 token in which the high transaction fees[1] could be one of your main problem when transferring from one platform to another.
TUSD exists across many chains, so in terms of the transaction fees, it shouldn't cause a problem since there are exists much cheaper chain alternative.
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I think that they are one of the only platforms to offer a AUD based stablecoin, which is definitely very attractive to us Aussies. Would like a bit of confirmation before I proceed with an investment though.
Besides the risks that already referred above, a non-USD stable coin may be subject to lack of adoption, especially TAUD, depending on which platform and how you going to do with investment, you should take into consideration on the availability of the TAUD pair. I didn't have much experience with the liquidity of it, but if I took a look at
TAUD Coingecko, the available market pair isn't a lot.