and 
are two people I can think on the top of my head that complained about being unable to use kana banks due to software problems). I'll list the resons on why you should make a romaji VB and why kana VCV and romaji VCV won't make an ounce of difference.1. More people are capable to use romaji than kana
Seriously. Not all computers run kana, but ALL computers run romaji, and as far as I'm concerned, ALL Japaese users can use romaji filenames on UTAU. Or else, they couldn't not only not use Ruko's English VB, but not be able to see most of the internet, because it's, guess what, written in roman letters.
2. If you don't know kana, you /will/ mess up
Before someone comes to me and says that you need to know Japanese to use UTAU... Not really. Most of UTAU is translated, and only really advanced features are in Japanese. Also, with the increase of English VBs, you can see why it's optional. What's necessary to know when you do a Japanese-oriented voicebank is the pronouncing.
3. You are not Japanese, nor live in Japan.
So, unless you live in China or Korea (since the CJK pack is usually in a grouped bunch), there's a chance that there are people whose computers won't be able to run kana filenames in your very own country.
4. "But most USTs are in kana!!1!11" No buts, I'll explain.
There's a function in the oto.ini (that you'll HAVE to learn how to configure or ask someone to do so for you, since oto.ini is very necessary to UTAU) called Alias. In that function, you'll put an alternate name for the note, just so UTAU can read both in the filenames and the specified names in the aliases. USTs in kana are usually easier for the UST maker to apply crossfade in the vowels, but romaji ones work just fine; you'd just have to put crossfading in each vowel instead of the entire UST, to avoid "na", "ni", "nu", "ne", "no" (and "wa", if you're like me and put "wo" in the crossfading options) to be crossfaded as well. BTW, speaking of aliases takes me to...
5. VCVs don't make an ounce of difference on how they're named, better name in romaji.
"But why are you saying that? Everyone told me that it must be in kana and that I must steal an oto from an UTAUloid with the same reclist!" WRONG. JUST WRONG. Even though people /might/ base their VCV otos out of other people's otos, if you steal them, you will mess up, for the simple reason that no two people pronounce things in exactly the same accent and length. Sometimes, the numerical values in overlap, preutterance and consonants are completely different from the original, just because it's impossible for you to pronounce precisely like the voicer from that UTAUloid whose oto you stole. It's better to program the VCV otos by yourself, or ask someone who can program it. And again we come to the alias. It's not important to name the fie in itself on the VCV, but to name the aliases. And taking in consideration you are going to do it for both kana and romaji, better just name the files in romaji, for a more ample use. Stealing is wrong in any way, shape or form. It also makes your VCVs sound slurry and weird.
Now that I finished my rant of sorts, I ask... Better, IMPLORE you to avoid naming your UTAUloid's sound files as kana as much as you can. A lot of people might want to use them and not be able to do so, you know. And yes, shift arrows count, too. Name with + or - as the suffix, if you want to make octave shifts.
Have a nice day.
Love,
Aline.
